Items

• [D7101D], Letter from Joseph Thomas Murray to Norman C Miller, July 26th, 1871
  1871-07-26
• [D7514G], Letter from Frederick K Fitch to Edison and Murray, June 1st, 1875
  1875-06-01
• [D7903ZAQ], Letter from Henry Mattice to Thomas Alva Edison, February 15th, 1879
  1879-02-15
• [D7903ZBD], Letter from Henry Mattice to Thomas Alva Edison, February 26th, 1879
  1879-02-26
• [E1727AH], Letter from C C C Bradley to Thomas Alva Edison, March 5th, 1917
  1917-03-05
• [E1727AI], Letter from Thomas Alva Edison to C C C Bradley, March 9th, 1917
  1917-03-09
• [LB001321], Letter from Charles Batchelor to Sigmund Bergmann, January 19th, 1878
  1878-01-19
• [LB001356], Letter from Charles Batchelor to Edward Hibberd Johnson, February 26th, 1878
  1878-02-26
• [LB116358], Letter from Thomas Alva Edison to C C C Bradley, March 9th, 1917
  1917-03-09
• [NE1674043], Technical Note, Thomas Alva Edison, Charles Batchelor, September 15th, 1875
  1875-09-15
• [NP002E14], Technical Note, Thomas Alva Edison, June 1873
  1873-06-00
• [NSUN05C], Technical Note, Thomas Alva Edison, November 1873
  1873-11-00
• [PA057], Article, Journal of the Telegraph, December 1st, 1869
  1869-12-01
• [X001G1A209], Technical Note, Thomas Alva Edison, February 1872
  1872-02-00